Update the Angular/DI tests to latest from github.

third_party/pkg/angular/lib/core/parser/lexer.dart

 library angular.core.parser.lexer;
 
 import 'package:angular/core/module.dart' show NgInjectableService;
 import 'package:angular/core/parser/characters.dart';
 
 class Token {
   final int index;
   final String text;
 
   var value;
@@ skipping 38 matching lines @@
   int peek = 0;
   int index = -1;
 
   Scanner(String input) : this.input = input, this.length = input.length {
     advance();
   }
 
   Token scanToken() {
     // Skip whitespace.
     while (peek <= $SPACE) {
-    if (++index >= length) {
-      peek = $EOF;
-      return null;
-    } else {
-      peek = input.codeUnitAt(index);
+      if (++index >= length) {
+        peek = $EOF;
+        return null;
+      } else {
+        peek = input.codeUnitAt(index);
+      }
     }
-  }
 
     // Handle identifiers and numbers.
     if (isIdentifierStart(peek)) return scanIdentifier();
     if (isDigit(peek)) return scanNumber(index);
 
     int start = index;
     switch (peek) {
       case $PERIOD:
         advance();
         return isDigit(peek) ? scanNumber(start) : new Token(start, '.');
@@ skipping 29 matching lines @@
         return scanComplexOperator(start, $BAR, '|', '|');
       case $TILDE:
         return scanComplexOperator(start, $SLASH, '~', '/');
       case $NBSP:
         while (isWhitespace(peek)) advance();
         return scanToken();
     }
 
     String character = new String.fromCharCode(peek);
     error('Unexpected character [$character]');
+    return null;
   }
 
   Token scanCharacter(int start, String string) {
     assert(peek == string.codeUnitAt(0));
     advance();
     return new Token(start, string);
   }
 
   Token scanOperator(int start, String string) {
     assert(peek == string.codeUnitAt(0));
@@ skipping 136 matching lines @@
     '<=',
     '>=',
     '&&',
     '||',
     '&',
     '|',
     '!',
     '?',
 ]);